prindle



Patented May 5, 1868.

D. R. VVPRINDLEI FIELD ROLLER.

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Lettere .Patent No. 77,523, dated May 5,' 1868.

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IMPROVEMENT In FIELD-Routes.

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'I0 ALL WHOM IT MAY CQNGEB'N'; -Bo it known that I, D. R. PRINDLE, ofEast Bethany,in the oountyof Genesee, and State of New Ylork, haveinvented an improved FieldiRoller; end I do hereby declare thatthe'following 'is'a full and exact description thereof, reference beinghad to theaeeompanying drawings making part et' this specification- -vFigure 1 boing n vetical'section through theccntre of the rollers.

Figure 2,`a vertical section in o. plano indicated by the line z z,tig.l.

Like letters designato corresponding parts in both figures.

I moke the roller.in two `(or more)`soctions, A B; and the first featureofV my improvement consists in the employment of ajointed axis or pivot,there being a section, a and b, respectively for each section A, and of'the roller, and jointed together, at m n, between the two sections ofthe roller. This jointing together of th' sections of the axis, while itallows the sections of the rolleltto ada-pt themselves to the unevensurface of the ground, causes Ithe said sections always to movetogether, up ori-down, and to ac t in harmony with each other and thewhole construction and arrangement nre simple and durable.

The bearings c c of the frame Cin-which the'journals ott the outer endsof the jointed-axis tnrn,`:n-e somewhat conical or tlnring inward, asshown, in order to allow the vibratory movement of the a-xis, us'ab'oveAset forth.

In connection with the'jointedaxi's of the' rol-ler, I employ 'avertically-oblong bearing, d, timeframe, for tho axes between thesections of th'o roller, so as to allow a free vertical movement of thejointed axis, while is rigid and nnbending horizontally',.so that thesections' of the roller pass rmly over' the. ground, while they adjustthemselves to tho'irregulariti'es of the grouitds surface. In'stead of asingle guide or bearing, d, there may bo two, 4one for each section ofthoaxis, but this is not necessary.

The other parts of the rollerv need not be of unusual construction, andrequire no description.

What I cln'im as my invention, n n'd desireto secure by Letters Patent,is`

The jointed ax-is or pivot a b, for two or more -sections, A B, of* a.roller, substantially as andi-'or the purpose -herein specied.-

I also claim the vertically-oblong or upright bearing d, between thesections of the roller, substantially as set forth.

IValso` claim the combination o f the jointed axis or pyot, andthevertically-slo'ttedror oblong bearing, so as to produce n rollerwhichwillndept itself vup and down to the unevenness o-fthe ground. butwill. be rigid in a 'horizontal direction,,substantially as hereinspecilied.

The above specification of my improved ie'ld-roller' signed by me, thiseighth day of`Febr'uary,1868.

D@ 1t. VPRINDLE.

Witnesses: i

J. S. BROWN,

A. '15. Vin Vsmxsn.

